Improvement in heaters



figa?.

spondiin,0r parts in the Vtwo figures.

. proceed to describe it.

ouml'laternl form, supported :it itsfront end l 4 carve' surl'uoes, us shown clearly in Fig. 2, und

` placed aseries of vert icnl tubes, l", which poss videdfut its upper end withnl Harige, c, which i extends entirely around it and projects down- UNITED STATES .lllHlAL H. SlMONDS, t

PATENT C;)1.111ICIS).d

u NEW YonK, N. Y;

IMPROVEMENT, IN HXEATgRs.

Specification forming purl. ot' Letters PutentNo. 35,0l3,datcd April 22, i862.

' This invention relates to an improved :tirheating furnace ot that class in which nirhefttingtubes ure placed in allot-airehamber inc losed within walls of masonry or metal to form aV chamber to receive thrl cold air to he heated.'Y To enable those skilled in the nrt to fully understandgund construct my invention, T will 'A represents the tire-pot ol' the furnace, vll the ush-box, und the feeding-passage ot' `t he ti re-p'oti. l

"l') is o. hot-uit chamber, whit-h may he of i bythe lire-pot und uslnhoxnnd :tt the buck end by an upright t'ruming, F., nu shown in Fig'. l. "lhc sitleshlid `hack ol' thefhot-,air chamlwr l') ure made ol' `convex l'orln, soos to 'present a series ot' alternate convex' and eontlesig'nated h vu b. lhis eu rrut ure ot' the hnidos :mdback of the notaixzclmnxbe'rgives n mut-h greater rmliatingsurfnee than could be oltaincitbystraight. sdes :und straight back forming plaine Surfaces.

Within-tho hot-air Chamber l) there :tre

entirely through l) und communiento ntft heir upper and lower ends with the external uit', there being no communientimi betwecnsaid. tubes and l). 'lhot-uhes F ure vnot pei-'mnnently secu-red in or nttaohed to l), hut are. .v

fitted therein :is follows: Ent-h tube l" is prol ward, so :is to tit in :ut annular recess, d, in

l` the top plate, ,315 the hot-ai1fchfnnber The reeesses'd encoinpuso the openings in the top plate, e, in whichtlie tnbeSF'Qii-e tlttetl, and the lCGSeS dz'' flledtlth Sandi@ lh'ih. forms a seal and makesflan oir-tight joixitl (See Fig'. 1.) The lower endslof the' tubeslF are `fitted on vert-ical ytulhilnii projections 71., which are o'n the inner surfce of thebotjtoi" t plate, lz', of the hot-air chamber D, and are encompassed by annular recesses4 j, 'which :ne

also vfilled with sand,,k, to receive the loyer ends of the tubes F, as shown in VFig'fl 'By ,this arrangementthe tubes E Inh-y, when ren# dered defeetive Iby'use, be re-di'lydetit und withdrawn from: the 'hotfair 'chamber I) and new ones inserted in ltheir places."

The sides :ind hack ot' thehotlir chamber D, as well as the topnnd bottjoniplzites thereof, are of eastrointhe recesses d of the top 1)lzite, e, being cast in it., and thctubnlar projeeftioiirs 7l and rceessesj are also' cust with thebottoln plate, i. t i

G is n pendent. curved pluto `attac-hcd to the l op plate, c, of the hotlair chamber D und extending the whole width ot t-helfltter. This `pla-t e serves.' as u defleotor, onditextends downward n. distance equal 4to ligtlf the. height? of the hot-air chamber 1I), als shown pin `I"`ig.` l.

The detlector G is (lireetlyiii frontof Series ot `vertical drnft-eduetion tubes,lL'ix'hicll` tre arranged in theforin of afeirele, nud tire a't- `tzt lied at their lower ends to n ctipJ. prf, 'ided utils:4 edge with n flange,7:,whichjis"fitted in un tnnuhir groovl, in the top plate, e, saifll groove bende,l filled with 4sund, 131,10 form n tight joint.' `The upper ondsof the tubes 'll communicate with u dom'eishupcd chniber, J, whit-h eommun aten ut. it` eentei'lwithfthe upper end of ueiiticnl pi'pl, which; coinmunieate."l with the moeke-pipe' L. ,The lower' part ol' thepipc l iso't conical'form,us$hown :it n, and this fonico-l port n passen4 through the center olf the up l and project-s` rdown a A,

`trifle into l). 'l'heeonic'Li-l part t of the pipe admits ot' the lower end fof the some hziviilg'a Small orilietn o, the use of which will presently lnexpluined.

'llie hot-nir chumber I) is incliised within :in upmttm-nt. or `eoldair -e]|a,1nberL, the wallsI of which may be of masonry, andere A ber has opcnings'in the lower parts of its walls to admit of the `admission of cold air, and hotair-conveying pipes communicate with the upper part of the chamber L',

The operation is as follows: When a .lire is kindled in the {irc-pot A, the products of combustion pass along,` throughthe'-hot-air chainber D and a-ll around and between the tubes F, ttedth'erein; The deector G gives al eircuifous route to the product-s of combustion 'in 33,63 indicz'ded by the- MMR niiiows," and-- causes the tn besF to bc subjected their' entire 'lengtlrto n, more vuniform degree of lient .than theyothorwise would; be, as without the `de'rftlee'rorv vGr the products of combustion would pass direetlyjinto the tubes II, as y.indicated by the red h-rrows; bntthedeiector G causes the 'prodnots of combustion to descend from .the'upper gzirtofdY-nnd' underneath -it- (the -tleiectm-)Ibofore passing Ainto the tnbesjI'L 'llhe'iprodncts ofoombnstion outer the domo; 1

lowerend of pipe .l issulcientlylnrgo ton-dmit of seotfnflling or discharging vit-soll' from vsaid-pipeh'ito I), und at the ssl-me time -not large .enough to "dm it ofndraft-lmssageinto hitherto been (unployedk and operated nmnf -'da,1npe1\ involves the necessity of s cante and foret-hongl-nz, sind neglect and carelessness f-res qnently heuse the draft-pipe to become choked with soot, so as to render 'the furn ace very inefficient. This eontingencyis avoided by my inventiomnsI the pipe-cleansing feature is entirely self-operating. The cold air passes througlrthe tubes F, as 'indicated bythe blue arrows, and is heated tllerebyythehented air being coni'cyedlby pipes, as usual, to the apa-rtlments designed to receive it. A.'

Hving thus described my invention wh at I ol'ain :s new, and (ToSlro to secure by Letters l1. Securing the tubos l" in the hot-airchalnbei" I) by means of thefinnges t: on the' upper ends of the tubes, fitted in `sand in reeesses d ilrfthe top'. plate, ',of -tlre4 hot-air chamber,

land by having the'flower ends ofthe tubes: fitted over vertical tubular projections 71, on' the 'bottom plate, y1'.,of the` hot-air cham-ber and within smid'i'n recesses 177, which surround thin 1nbnlnrprojections 71, snbshuitin-lly as set The drnlt-ppe .K haring its lower part, .Ie-'ol' 'conical form; withlfnn opening; o, atjlts lower end.,-in connectionwi'ith one .or morel d ra i'tt-nbes, H, and n, chamber, J or its equivalent, arranged 4in ,relation vwith the hot-a'.

ehzunlner D, with orwrithont deiiecftor G, sind 

